Just had same issue. Changed banks 2 weeks ago, deleted my old card and tried to enter the new visa debit card, said it didn't exist. I called SQeenix support, was greeted by a CS guy that acted like he really could care less. He said they are having Visa issues, no time approx fix. I will be letting my game go if not fixed before end of May, It's too difficult to pay a company that doesn't seem to want the money.